refactored the managers

src/singletons/fontmanager.cpp

@@ -0,0 +1,91 @@
+#include "singletons/fontmanager.hpp"
+
+#include <QDebug>
+
+namespace chatterino {
+
+FontManager::FontManager()
+    : currentFontFamily("/appearance/currentFontFamily", "Arial")
+    , currentFontSize("/appearance/currentFontSize", 12)
+//    , currentFont(this->currentFontFamily.getValue().c_str(), currentFontSize.getValue())
+{
+    this->currentFontFamily.connect([this](const std::string &newValue, auto) {
+        this->incGeneration();
+        //        this->currentFont.setFamily(newValue.c_str());
+        this->currentFontByDpi.clear();
+        this->fontChanged.invoke();
+    });
+    this->currentFontSize.connect([this](const int &newValue, auto) {
+        this->incGeneration();
+        //        this->currentFont.setSize(newValue);
+        this->currentFontByDpi.clear();
+        this->fontChanged.invoke();
+    });
+}
+
+FontManager &FontManager::getInstance()
+{
+    static FontManager instance;
+
+    return instance;
+}
+
+QFont &FontManager::getFont(Type type, float dpi)
+{
+    //    return this->currentFont.getFont(type);
+    return this->getCurrentFont(dpi).getFont(type);
+}
+
+QFontMetrics &FontManager::getFontMetrics(Type type, float dpi)
+{
+    //    return this->currentFont.getFontMetrics(type);
+    return this->getCurrentFont(dpi).getFontMetrics(type);
+}
+
+FontManager::FontData &FontManager::Font::getFontData(Type type)
+{
+    switch (type) {
+        case Small:
+            return this->small;
+        case MediumSmall:
+            return this->mediumSmall;
+        case Medium:
+            return this->medium;
+        case MediumBold:
+            return this->mediumBold;
+        case MediumItalic:
+            return this->mediumItalic;
+        case Large:
+            return this->large;
+        case VeryLarge:
+            return this->veryLarge;
+        default:
+            qDebug() << "Unknown font type:" << type << ", defaulting to medium";
+            return this->medium;
+    }
+}
+
+QFont &FontManager::Font::getFont(Type type)
+{
+    return this->getFontData(type).font;
+}
+
+QFontMetrics &FontManager::Font::getFontMetrics(Type type)
+{
+    return this->getFontData(type).metrics;
+}
+
+FontManager::Font &FontManager::getCurrentFont(float dpi)
+{
+    for (auto it = this->currentFontByDpi.begin(); it != this->currentFontByDpi.end(); it++) {
+        if (it->first == dpi) {
+            return it->second;
+        }
+    }
+    this->currentFontByDpi.push_back(std::make_pair(
+        dpi,
+        Font(this->currentFontFamily.getValue().c_str(), this->currentFontSize.getValue() * dpi)));
+
+    return this->currentFontByDpi.back().second;
+}
+}  // namespace chatterino